Advertisements
Advertisements
प्रश्न
Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 1024 kg and of the Sun = 2 × 1030 kg. The average distance between the two is 1.5 × 1011 m.
Advertisements
उत्तर
Mass of the earth (M) = 6 × 1024 kg
Mass of the Sun (m) = 2 × 1030 kg
G Universal constant = 6.67 × 1011 Nm2/kg2
The average distance between the two d = 1.5 × 1011 m.
F = `G xx (M_exxm_s)/r^2`
F = `(6.67 xx 10^-11 Nm^2 kg^-2xx (6 xx 10^24 xx 2 xx 10^30))/(1.5 xx 10^11m)^2`
F = 3.57 × 1022 N
Gravitational force between the earth and the sun = 3.57 × 1022 N
APPEARS IN
संबंधित प्रश्न
Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
At noon, the sun and the earth pull the objects on the earth's surface in opposite directions. At midnight, the sun and the earth pull these objects in same direction. Is the weight of an object, as measured by a spring balance on the earth's surface, more at midnight as compared to its weight at noon?
Two small bodies of masses 10 kg and 20 kg are kept a distance 1.0 m apart and released. Assuming that only mutual gravitational forces are acting, find the speeds of the particles when the separation decreases to 0.5 m.
A uniform metal sphere of radius a and mass M is surrounded by a thin uniform spherical shell of equal mass and radius 4a (In the following figure). The centre of the shell falls on the surface of the inner sphere. Find the gravitational field at the points P1 and P2 shown in the figure.
Distinguish between gravity and gravitation
A ball is thrown up with a speed of 4.9 ms-1.
Calculate the time it takes to reach this height.
Name and state the action and reaction in the following case:
A book lying on a table.
Name and state the action and reaction in the following case:
Hammering a nail.
State the universal law of gravitation and derive its mathematical expression.
